Ok, if one day when you want to print something and found out that your printer is missing, try this steps to make your printer appears again.
1. Click the Windows-Key + R to bring up the RUN box (or click START, RUN)
2. Type services.msc in the box and press ENTER
3. Look for Print Spooler. Right-click and select START
Check your printer again. Close all your document first and reopen it again and try printing it again
If it’s still not there, maybe your children “accidentally uninstalled/removed” your printers… =p